Experimental Studies on the Effect of Mixed Metal Oxide DeNo_x Catalyst on the Control of CI Engine Exhaust Emission

Abstract

Catalysts have come to occupy a prominent place in the reciprocating engine generated pollutants purifications. With the progressive tightening of the emission norms, there is a spurt in the research activity in this area. For the very survival of the piston engines in the new millennium, the engines have to adapt themselves to the challenges posed. As there is a vast population of single-cylinder diesel engine-powered irrigation pump sets in the rural areas of our country, it was thought fit to make these engines environmentally friendlier. As these engines are very rugged, by the fitment of fairly inexpensive exhaust gas treatment devices like the one discussed in this chapter, the emission levels of major pollutants like oxides of nitrogen and particulate matter can be significantly brought down. There is only a marginal increase in the fuel consumption rate due to the add-on device. The details of a mixed oxides catalyst-coated γ-alumina pellets filled converter system for the exhaust gases of a single cylinder, D.I. Diesel engine system are presented and discussed in this chapter. It is believed that such systems have a role to play in the maintenance of the ecosystem of rural India. Effective reduction of NO_x level will likely require exhaust after treatment devices such as catalytic NO_x converters. The effects of aluminium-doped manganese and copper dioxide catalysts on the NO_x emissions of the engine are presented and discussed in this chapter.